Hello Dear,

According to you, you scored 91 percentile in JEE Mains then your rank  would be around 92070 - 103500 .

You can predict rank from the link given below

OR

You can also check out Marks Vs Percentile Vs Ranks from the link given below :-

JEE Main 2021 Marks vs Percentile vs Rank – Calculate Marks using percentile score (careers360.com)

You have OBC category quota . There is a  chance to get admission to NITs and IIITs.

You can predict other colleges from the link given below

To more information about  NITs cutoff  and IIITs:-

NITs JEE Main Cutoff 2021, 2020, 2019, 2018, 2017 - Check NIT B.Tech Admission Process, Opening and Closing Ranks (careers360.com)

List of Indian Institutes of Information Technology (IIITs) (careers360.com)

Hope this information helps you...

Best of luck :)